Tanaka Kikinzoku Kogyo K.k.

Tokushima University

Emi Takegawa

Kojiro Shiraishi

Kunihiro Shima

Yuya Kato

Kunihiro Tanaka

Kenji Goto

Michimasa Okubo

Kenichi Hamada

Eiichi Honda

The present invention relates to a medical Au&#x2014;Pt&#x2014;Pd alloy including Au, Pt, Pd, and inevitable impurities. The alloy has an alloy composition inside a polygon (A1-A2-A3-A4-A5-A6) surrounded by straight lines connected at point A1 (Au: 37.9 atom %, Pt: 0.1 atom %, and Pd: 62 atom %), point A2 (Au: 79.9 atom %, Pt: 0.1 atom %, and Pd: 20 atom %), point A3 (Au: 79.9 atom %, Pt: 20 atom %, and Pd: 0.1 atom %), point A4 (Au: 69.9 atom %, Pt: 30 atom %, and Pd: 0.1 atom %), point A5 (Au: 49 atom %, Pt: 30 atom %, and Pd: 21 atom %), and point A6 (Au: 39 atom %, Pt: 40 atom %, and Pd: 21 atom %) in a Au&#x2014;Pt&#x2014;Pd ternary state diagram. The metal structure of the alloy is optimized, and the metal structure is close to a single-phase structure, and has little precipitation of a Au-rich phase and a Pt-rich phase different in composition from a mother phase.

Medical Au-Pt-Pd alloy

Growing community of inventors

Tokushima, Japan

Emi Takegawa